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<!DOCTYPE html>
<title>flexbox | flex formatting context :: negative margins and
border box</title>
<link rel="author" href="http://opera.com" title="Opera Software">
<link rel="match" href="flexbox_flex-formatting-interop-ref.html">
<style>
* {margin: 0;}
.float {
background: lightblue;
width: 200px;
float: left;
}
#flex {
background: #ffcc00;
margin-left: -200px;
width: 200px;
display: flex;
}
div div {
border: 2px solid transparent;
margin: 0 2em 2em;
flex: none;
}
p {
clear: both;
margin: 2em 0;
}
</style>
<div class="float">float</div>
<div id="flex">
<div>xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx</div>
</div>